Use of Pt and Boron-Doped Diamond Anodes in the Electrochemical Advanced Oxidation of Ponceau SS Diazo Dye in Acidic Sulfate Medium

dos Santos Alexsandro Jhones; Martinez-Huitle Carlos A.; Sires Ignasi; Brillas Enric

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Use of Pt and Boron-Doped Diamond Anodes in the Electrochemical Advanced Oxidation of Ponceau SS Diazo Dye in Acidic Sulfate Medium

机译：在酸性硫酸盐培养基中使用PT和硼掺杂的金刚石阳极在电化学先进氧化中的电化学先进氧化

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摘要

The electrochemical degradation of 2.5 L of Ponceau SS diazo dye solution in acidic sulfate medium has been studied in a pre-pilot flow plant with a boron-doped diamond (BDD)/airdiffusion or Pt/air-diffusion cell connected to an annular photo-reactor. The decolorization and mineralization was enhanced in the order: electrochemical oxidation with electrogenerated H2O2 electro-Fenton photoelectro-Fenton. The two former methods performed better with the BDD anode, whereas the latter yielded similar results for both anodes. From this, the use of less expensive active anodes such as Ti vertical bar Pt instead of nonactive BDD for photo-assisted Fenton-based electrochemical processes is recommended. In all methods, increasing current density led to a greater degradation rate, but with lower mineralization current efficiency and higher energy consumption. Five primary aromatic products and four final carboxylic acids were detected, along with recalcitrant products poorly removed by hydroxyl radicals and UVA radiation.

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来源
《ChemElectroChem》 |2018年第4期|共9页
作者
dos Santos Alexsandro Jhones; Martinez-Huitle Carlos A.; Sires Ignasi; Brillas Enric;
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作者单位

Univ Fed Rio Grande do Norte Inst Quim BR-59072900 Lagoa Nova RN Brazil;

Univ Fed Rio Grande do Norte Inst Quim BR-59072900 Lagoa Nova RN Brazil;

Univ Barcelona Fac Quim Dept Quim Fis Marti i Franques 1-11 E-08028 Barcelona Spain;

Univ Barcelona Fac Quim Dept Quim Fis Marti i Franques 1-11 E-08028 Barcelona Spain;

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原文格式 PDF
正文语种 eng
中图分类物理化学（理论化学）、化学物理学;
关键词
anodic oxidation; electrochemistry; electro-Fenton; photocatalysis; Ponceau SS dye;

机译：阳极氧化;电化学;electro-fenton;光催化;ponceau ss染料;

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1. Anodic oxidation of azo dye C.I. Acid Red 73 by the yttrium-doped Ti/SnO2-Sb electrodes [J] . Li XU, Zhi GUO, Lishun DU 化学科学与工程前沿：英文版 . 2013,第003期
2. Use of Pt and Boron-Doped Diamond Anodes in the Electrochemical Advanced Oxidation of Ponceau SS Diazo Dye in Acidic Sulfate Medium [J] . dos Santos Alexsandro Jhones, Martinez-Huitle Carlos A., Sires Ignasi, ChemElectroChem . 2018,第4期

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Use of Pt and Boron-Doped Diamond Anodes in the Electrochemical Advanced Oxidation of Ponceau SS Diazo Dye in Acidic Sulfate Medium

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